999676998 has 32 divisors (see below), whose sum is σ = 2223640800. Its totient is φ = 332905248.

The previous prime is 999676957. The next prime is 999676999. The reversal of 999676998 is 899676999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999676999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51540 + ... + 68232.

It is an arithmetic number, because the mean of its divisors is an integer number (69488775).

Almost surely, 2^999676998 is an apocalyptic number.

999676998 is an abundant number, since it is smaller than the sum of its proper divisors (1223963802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999676998 is a wasteful number, since it uses less digits than its factorization.

999676998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17813 (or 17807 counting only the distinct ones).

The product of its digits is 119042784, while the sum is 72.

The square root of 999676998 is about 31617.6690791715. The cubic root of 999676998 is about 999.8923210723.

Subtracting from 999676998 its reverse (899676999), we obtain a palindrome (99999999).

The spelling of 999676998 in words is "nine hundred ninety-nine million, six hundred seventy-six thousand, nine hundred ninety-eight".